<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: ExcludeMimeType.php 24593 2012-01-05 20:35:02Z matthew $
 */
/**
 *
 * @see Zend_Validate_File_MimeType
 */
require_once 'Zend/Validate/File/MimeType.php';

/**
 * Validator for the mime type of a file
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
class Zend_Validate_File_ExcludeMimeType extends Zend_Validate_File_MimeType {

    const FALSE_TYPE = 'fileExcludeMimeTypeFalse';

    const NOT_DETECTED = 'fileExcludeMimeTypeNotDetected';

    const NOT_READABLE = 'fileExcludeMimeTypeNotReadable';

    /**
     * Defined by Zend_Validate_Interface
     * Returns true if the mimetype of the file does not matche the given ones.
     * Also parts
     * of mimetypes can be checked. If you give for example "image" all image
     * mime types will not be accepted like "image/gif", "image/jpeg" and so on.
     * @param string $value Real file to check for mimetype
     * @param array $file File data from Zend_File_Transfer
     * @return boolean
     */
    public function isValid ($value, $file = null) {
        if ($file === null) {
            $file = array('type' => null, 'name' => $value);
        }
        // Is file readable ?
        require_once 'Zend/Loader.php';
        if ( ! Zend_Loader::isReadable ($value)) {
            return $this -> _throw ($file, self::NOT_READABLE);
        }
        $mimefile = $this -> getMagicFile ();
        if (class_exists ('finfo', false)) {
            $const = defined ('FILEINFO_MIME_TYPE') ? FILEINFO_MIME_TYPE : FILEINFO_MIME;
            if ( ! empty ($mimefile)) {
                $mime = new finfo ($const, $mimefile);
            } else {
                $mime = new finfo ($const);
            }
            if ( ! empty ($mime)) {
                $this -> _type = $mime -> file ($value);
            }
            unset ($mime);
        }
        if (empty ($this -> _type)) {
            if (function_exists ('mime_content_type') && ini_get ('mime_magic.magicfile')) {
                $this -> _type = mime_content_type ($value);
            } elseif ($this -> _headerCheck) {
                $this -> _type = $file['type'];
            }
        }
        if (empty ($this -> _type)) {
            return $this -> _throw ($file, self::NOT_DETECTED);
        }
        $mimetype = $this -> getMimeType (true);
        if (in_array ($this -> _type, $mimetype)) {
            return $this -> _throw ($file, self::FALSE_TYPE);
        }
        $types = explode ('/', $this -> _type);
        $types = array_merge ($types, explode ('-', $this -> _type));
        foreach ($mimetype as $mime) {
            if (in_array ($mime, $types)) {
                return $this -> _throw ($file, self::FALSE_TYPE);
            }
        }
        return true;
    }

}
